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Stereoscopic image display device

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20140071526 patent thumbnailZoom

Stereoscopic image display device


A stereoscopic image display device includes a substrate; a plurality of black matrices formed parallel to one another on a first surface of the substrate; a plurality of black stripes formed on a second surface of the substrate opposite the first surface, each of the plurality of black stripes corresponding to one of the plurality of black matrices, each of the plurality of black stripes having a width equal to or greater than a width of the corresponding one of the plurality of black matrices; and a patterned retarder film formed on the plurality of black stripes, the patterned retarder film including a plurality of first retarder patterns and a plurality of second retarder patterns, wherein a first retarder pattern is disposed over a region between a first pair of black stripes, and a second retarder pattern is disposed over a region between a second pair of black stripes that is adjacent to the first pair of black stripes, and wherein the width of each of the plurality of black stripes is less than or equal to twice an adhesion margin of the patterned retarder film.
Related Terms: Adhesion

Browse recent Lg Display Co., Ltd. patents - Seoul, KR
USPTO Applicaton #: #20140071526 - Class: 359465 (USPTO) -


Inventors: Seung-man Ryu, Jin-yeong Kim, Mee-ran Park

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The Patent Description & Claims data below is from USPTO Patent Application 20140071526, Stereoscopic image display device.

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CROSS-REFERENCE TO RELATED APPLICATIONS

The present application claims the priority to Korean Patent Application No. 10-2012-0100934 filed in the Republic of Korea on Sep. 12, 2012, which is hereby incorporated by reference in its entirety.

BACKGROUND

1. Field of the Disclosure

The present disclosure relates to a stereoscopic image display device, and more particularly, to a stereoscopic image display device capable of improving crosstalk between stereoscopic images.

2. Discussion of the Related Art

A stereoscopic image display device may embody stereoscopic images using a stereoscopic technique or an autostereoscopic technique.

The stereoscopic technique employs binocular disparity images having a high stereoscopic effect and may be classified into a glasses type and a non-glasses type. Both the glasses-type stereoscopic technique and the non-glasses-type stereoscopic technique are being put to practical use. In the glasses-type stereoscopic technique, binocular disparity images may be displayed on a direct-view display device or a projector by changing the polarization direction of the binocular disparity images, or using a time division method, and stereoscopic images may be embodied using polarized glasses or liquid crystal (LC) shutter glasses. In the non-glasses-type stereoscopic technique, an optical plate (e.g., a parallax barrier) configured to separate an optical axis of a binocular disparity image may be installed in front of or behind a display screen.

FIG. 1 is a view of illustrating a related art stereoscopic image display device.

Referring to FIG. 1, a glasses-type stereoscopic image display device 1 may include a thin-film transistor (TFT) array substrate 10, a color filter substrate 12 including color filters 13 and black matrices 14, and a liquid crystal (LC) layer 15 interposed between the TFT array substrate 10 and the color filter substrate 12. Also, an upper polarizer 16a may be disposed on the color filter substrate 12, and a lower polarizer 16b may be disposed under the TFT array substrate 10. A patterned retarder 17 may be disposed on the upper polarizer 16a, and a surface-processed protection film 18 may be disposed on the patterned retarder 17.

The glasses-type stereoscopic image display device 1 having the above-described construction may alternately display left-eye images and right-eye images and switch characteristics of polarized light incident to polarized glasses through the patterned retarder 17. Thus, the glasses-type stereoscopic image display device 1 may spatially divide the left-eye images and the right-eye images from each other and embody stereoscopic images.

During formation of stereoscopic images, a vertical viewing angle of a stereoscopic image display device may be determined by the width of the black matrices 14 and the distance between the color filters 13 and the patterned retarder 17. Although the related art stereoscopic image display device embodies a vertical viewing angle of about 26° by increasing the width of the black matrices, an increase in the width of the black matrices may lead to degradation of an aperture ratio and luminance.

SUMMARY

OF THE INVENTION

Accordingly, the present invention is directed to a stereoscopic image display device that substantially obviates one or more of the problems due to limitations and disadvantages of the related art.

An object of the present disclosure is to provide a stereoscopic image display device, which may optimize the widths of the black matrices and black stripes, and improve crosstalk between stereoscopic images without degrading an aperture ratio and luminance.

Additional features and advantages of the invention will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

To achieve these and other advantages and in accordance with the purpose of the present invention, as embodied and broadly described herein, a stereoscopic image display device includes a substrate; a plurality of black matrices formed parallel to one another on a first surface of the substrate; a plurality of black stripes formed on a second surface of the substrate opposite the first surface, each of the plurality of black stripes corresponding to one of the plurality of black matrices, each of the plurality of black stripes having a width equal to or greater than a width of the corresponding one of the plurality of black matrices; and a patterned retarder film formed on the plurality of black stripes, the patterned retarder film including a plurality of first retarder patterns and a plurality of second retarder patterns, wherein a first retarder pattern is disposed over a region between a first pair of black stripes, and a second retarder pattern is disposed over a region between a second pair of black stripes that is adjacent to the first pair of black stripes, and wherein the width of each of the plurality of black stripes is less than or equal to twice an adhesion margin of the patterned retarder film.

In another aspect, an image display device includes a substrate; a plurality of black matrices formed in a row on a first surface of the substrate; a plurality of black stripes formed on a second surface of the substrate opposite the first surface, each of the plurality of black stripes corresponding to one of the plurality of black matrices, each of the plurality of black stripeshaving a width equal to or greater than a width of the corresponding one of the plurality of black matrices; and a patterned retarder film formed on the plurality of black stripes, the patterned retarder film including a plurality of first retarder patterns and a plurality of second retarder patterns, wherein a first retarder pattern is disposed over a region between a first pair of black stripes, and a second retarder pattern is disposed over a region between a second pair of black stripes that is adjacent to the first pair of black stripes, and wherein the width of each of the plurality of black stripes is within a range given by a following equation:

( 2 1 - CT )  { ( 1 + CT )  m - ( CT ×

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Key IP Translations - Patent Translations


stats Patent Info
Application #
US 20140071526 A1
Publish Date
03/13/2014
Document #
13711089
File Date
12/11/2012
USPTO Class
359465
Other USPTO Classes
International Class
02B27/26
Drawings
9


Adhesion


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